LEGO Duplo form sorter: Puppy house (10441) is a great learning toy for pre-school dog fans. This game set lets infants from 18 months of age develop dexterity. When children build the LEGO puppy home and drop the shapes through the matching holes in the lid, they can learn how to solve problems and recognize different forms. This gift offers great family activities and gives preschool children aged 1.5 years and over spatial thinking. Parents can show all the differently shaped stones and then let their toddler build trees, dog figures and even a house with them. Children can look forward to creative role-playing games with their cute LEGO Duplo toy dogs and have the puppies chase a ball or nibble on a bone. After the imaginative gaming experience the children can sort the forms. When digging out which shape fits into which hole, infants must concentrate and develop patience and tenacity. If they don't get it right now, they will have to try again to find the right hole for each toy.